<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <script>
    'use strict';

    var student = {
      name: "zjz",
      age: 22,
      sex: "男",
      run: function (){
        console.log(this.name  + "跑步---");
      }
    };

    var xiaoming = {
      name: "xiaoming"
    };

    xiaoming.__proto__  = student;
  </script>
</head>
<body>

</body>
</html>